gen_data {coxrobust}R Documentation

Generate Data from the Proportional Hazards Regression Model

Description

Generates data set from the proportional hazards regression model without or with contamination.

Usage

gen_data(n, beta, cont = 0, p.censor = 0)

Arguments

n

number of observations.

beta

vector of regression coefficients.

cont

fraction of contaminated observations.

p.censor

probability of censoring.

Details

Covariates are generated independently, each from the standard normal distribution. Baseline hazard is equal to 1. After generation of survival times, covariates are replaced by independent 2N(0,1)+1 variables in fraction cont of observations.

Value

Data frame containing the following variables:

time

vector of survival times.

status

vector of censoring status.

X1, X2, ...

explanatory variables (their number is determined by the dimension of vector of regression coefficients).

See Also

coxph, coxr

Examples

gen_data(50, c(2,-2), cont = 0.05)

[Package coxrobust version 1.0 Index]